When do electronic surveillance devices such as computers, video cameras, and telephone monitoring step over the line from "effective management controls" to "intrusions on employee rights"?
什么情况下电子监视手段，如计算机，摄像机和电子侦听等超越了有效控制的界限，而侵犯了员工的权利？
Based on the demand of video surveillance in certain special workplaces, the importance of cyclic recording of video files in the monitoring operation is analyzed and discussed.
根据某些特殊作业现场对视频监控的要求，对视频文件循环录制在监控中的重要性进行了分析和讨论。
The system consists of remote video surveillance monitoring center and background control center which conducts data transmission between remote port and background platform through 3g network.
该系统由远端视频监控和后台监控中心两大部分组成，通过3G网络进行远端与后台间的数据传输。
There are many inadequacies in existing monitoring systems in the market, such as video surveillance, infrared sensors, magnetic induction methods monitor, Bluetooth wireless monitoring and so on.
而现有的监控系统，如目前市场上常见的视频监控、红外感应、磁感应方式监控、蓝牙无线监控等皆存在诸多不足。
There are many inadequacies in existing monitoring systems in the market, such as video surveillance, infrared sensors, magnetic induction methods monitor, Bluetooth wireless monitoring and so on.
而现有的监控系统，如目前市场上常见的视频监控、红外感应、磁感应方式监控、蓝牙无线监控等皆存在诸多不足。
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